-54.59% is the change from 861 to 391
Calculation steps:
[( 391 - 861 ) ÷ 861] x 100 = -54.59%
Formula
Percentage change = [(391 - 861) / 861] x 100
Subtract the new number by the original number
391 - 861 = -470
-470 ÷ 861 = -0.5458768873403019
-0.5458768873403019 x 100 = -54.59%